linux-kernel - Re: [PATCH] x86: rust: Disable entry padding with Rust

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Message-ID: <CANiq72m3-j_ZmwfSCZG+-uMr9fzocMmUJhDkjgspzCKbYbbO_w@mail.gmail.com>
Date: Sat, 3 Feb 2024 14:35:11 +0100
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Dave Hansen <dave.hansen@...el.com>
Cc: Matthew Maurer <mmaurer@...gle.com>, Thomas Gleixner <tglx@...utronix.de>, 
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, 
	Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, "H. Peter Anvin" <hpa@...or.com>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, Björn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...sung.com>, 
	Alice Ryhl <aliceryhl@...gle.com>, linux-kernel@...r.kernel.org, 
	rust-for-linux@...r.kernel.org
Subject: Re: [PATCH] x86: rust: Disable entry padding with Rust

On Wed, Jan 31, 2024 at 9:32 PM Dave Hansen <dave.hansen@...el.com> wrote:
>
> That way, someone who is using CALL_DEPTH_TRACKING doesn't accidentally
> lose it by turning on RUST.  To turn on RUST, they'd first need to go
> turn off the things that are selecting CALL_THUNKS.

+1, we should prefer to avoid disabling other things, especially since
Rust is still a bit of an "expert" option, so please feel free to add
it to the `RUST` list.

Cheers,
Miguel